CVE-2026-97026
Flatpak: flatpak: world-writable temporary child repositories in system-helper cache path
Description
Flatpak creates temporary child repository directories under the user cache with world-writable permissions (0777). On multi-user systems with a permissive umask, other local users could read or modify the temporary directory used while installing apps or runtimes, potentially causing installation failures (denial of service); tampered content would fail signature/digest verification rather than being trusted.
CVSS Vector Breakdown
AV:LAttack VectorAC:LAttack ComplexityPR:LPrivileges RequiredUI:RUser InteractionS:UScopeC:LConfidentialityI:NIntegrityA:LAvailabilityWeaknesses
Affected Products
Exploitability
References
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